Merge pull request #91 from mrubyedge/release-2

Release 2.0.0

Bump

Bump 2

Bump cli

CLI released version 1.1.9.

Bump all

Update REPL to initialize math and time gems

Merge pull request #74 from mrubyedge/loop-and-limit-insns

Loop and limit insns

Merge pull request #71 from mrubyedge/lv

Support local variable names

CLI version 1.1.4